Today | Weather | Wednesday, February 25, 2026

Weather in Redwood City, California

08:23 PM
Now
Cloudy Night
59° F
Feels Like 57°
Precipitation 0 %
Wind 7 mph
Humidity 89 %
Today
Cloudy Night
Day 64°
Night 54°
Precipitation 7 %
Wind 6 mph

Redwood City Weather Forecast Updated

Last updated on

Air Quality in Redwood City

NOW
28 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 6.51 µg/m³
PM10 9.95 µg/m³
O3 0.030 ppm
NO2 1.3 ppb
SO2 0.3 ppb
CO 0.11 ppm
NH3 0 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.56.51 µg/m³
PM109.95 µg/m³
O358.91 µg/m³
NO22.47 µg/m³
SO20.77 µg/m³
CO129.56 µg/m³
NH30 µg/m³
NO0 µg/m³